Commit 6e80cff5 authored by Michal Simek's avatar Michal Simek

microblaze: Support 4k/16k/64k pages

Add support for page size which is supported by MMU.
Remove 8k and 32k page size because they are not supported
by MMU.
Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 9f78d3b5
......@@ -243,14 +243,11 @@ choice
config MICROBLAZE_4K_PAGES
bool "4k page size"
config MICROBLAZE_8K_PAGES
bool "8k page size"
config MICROBLAZE_16K_PAGES
bool "16k page size"
config MICROBLAZE_32K_PAGES
bool "32k page size"
config MICROBLAZE_64K_PAGES
bool "64k page size"
endchoice
......
......@@ -23,12 +23,10 @@
#ifdef __KERNEL__
/* PAGE_SHIFT determines the page size */
#if defined(CONFIG_MICROBLAZE_32K_PAGES)
#define PAGE_SHIFT 15
#if defined(CONFIG_MICROBLAZE_64K_PAGES)
#define PAGE_SHIFT 16
#elif defined(CONFIG_MICROBLAZE_16K_PAGES)
#define PAGE_SHIFT 14
#elif defined(CONFIG_MICROBLAZE_8K_PAGES)
#define PAGE_SHIFT 13
#else
#define PAGE_SHIFT 12
#endif
......
......@@ -862,7 +862,13 @@ ex_handler_done:
* bits 20 and 21 are zero.
*/
andi r3, r3, PAGE_MASK
#ifdef CONFIG_MICROBLAZE_64K_PAGES
ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_64K)
#elif CONFIG_MICROBLAZE_16K_PAGES
ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_16K)
#else
ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_4K)
#endif
mts rtlbhi, r3 /* Load TLB HI */
nop
......
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